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PCA9554ADW
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PCA9554ADW

Product Overview

Category

PCA9554ADW belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

  • 8-bit I/O expander with I2C-bus/SMBus interface
  • Low standby current consumption of 1 µA
  • Operating voltage range: 2.3 V to 5.5 V
  • Open-drain interrupt output
  • Noise filter on SCL/SDA inputs
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

Package

PCA9554ADW is available in a small outline package (SO) with 16 pins.

Essence

The essence of PCA9554ADW lies in its ability to provide additional I/O ports for microcontrollers or other digital devices through the I2C-bus/SMBus interface.

Packaging/Quantity

This product is typically sold in reels, with each reel containing 2500 units.

Specifications

  • Supply Voltage: 2.3 V to 5.5 V
  • Input/Output Voltage Range: GND to VDD
  • Maximum Output Current: ±10 mA
  • Operating Temperature Range: -40°C to +85°C
  • I2C-bus Frequency: 100 kHz, 400 kHz, and 1 MHz

Detailed Pin Configuration

  1. A0: Address Input
  2. A1: Address Input
  3. A2: Address Input
  4. P0: General Purpose I/O Port 0
  5. P1: General Purpose I/O Port 1
  6. P2: General Purpose I/O Port 2
  7. P3: General Purpose I/O Port 3
  8. P4: General Purpose I/O Port 4
  9. P5: General Purpose I/O Port 5
  10. P6: General Purpose I/O Port 6
  11. P7: General Purpose I/O Port 7
  12. INT: Interrupt Output
  13. SDA: I2C-bus Serial Data Line
  14. SCL: I2C-bus Serial Clock Line
  15. GND: Ground
  16. VDD: Supply Voltage

Functional Features

  • Provides additional I/O ports for microcontrollers or digital devices
  • Can be cascaded with other I2C-bus/SMBus devices
  • Low standby current consumption allows for power-efficient operation
  • Open-drain interrupt output for efficient communication
  • Noise filter on SCL/SDA inputs ensures reliable data transmission
  • High ESD protection safeguards against electrostatic discharge

Advantages and Disadvantages

Advantages

  • Compact size and easy integration into existing systems
  • Wide operating voltage range allows for versatile applications
  • Low standby current consumption minimizes power usage
  • Robust ESD protection ensures product durability

Disadvantages

  • Limited number of I/O ports may not suffice for complex applications requiring numerous connections
  • Reliance on the I2C-bus/SMBus interface may introduce potential compatibility issues with certain devices

Working Principles

PCA9554ADW operates by receiving commands and data through the I2C-bus/SMBus interface from a master device, such as a microcontroller. It then processes these commands to control the input/output ports accordingly. The interrupt output can be used to notify the master device of any changes in the input status.

Detailed Application Field Plans

PCA9554ADW finds application in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to PCA9554ADW that offer similar functionality include: - MCP23017 - PCF8574 - MAX7313

These alternatives can be considered based on specific requirements and compatibility with the target system.

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10 pirs û bersivên hevpar ên têkildarî sepana PCA9554ADW di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of PCA9554ADW:

1. What is PCA9554ADW? PCA9554ADW is a 16-bit I/O expander with an I2C interface. It provides general-purpose parallel input/output expansion for most microcontroller families.

2. What is the maximum voltage that PCA9554ADW can handle? The PCA9554ADW can handle a maximum voltage of 5.5V.

3. How many GPIO pins does PCA9554ADW have? PCA9554ADW has 16 GPIO pins that can be configured as inputs or outputs.

4. Can PCA9554ADW be used with both 3.3V and 5V microcontrollers? Yes, PCA9554ADW is compatible with both 3.3V and 5V microcontrollers.

5. How do I communicate with PCA9554ADW using I2C? You can communicate with PCA9554ADW using the I2C protocol by sending commands and data over the SDA (data) and SCL (clock) lines.

6. Can PCA9554ADW be used to drive LEDs? Yes, PCA9554ADW can be used to drive LEDs as it has open-drain outputs that can sink current.

7. What is the maximum current that PCA9554ADW can sink per GPIO pin? PCA9554ADW can sink up to 25mA per GPIO pin.

8. Can PCA9554ADW be used to read analog signals? No, PCA9554ADW is a digital I/O expander and cannot directly read analog signals.

9. Can multiple PCA9554ADW devices be connected on the same I2C bus? Yes, multiple PCA9554ADW devices can be connected on the same I2C bus by assigning unique addresses to each device.

10. Can PCA9554ADW operate in a low-power mode? Yes, PCA9554ADW has a low-power mode that reduces power consumption when not actively driving outputs.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.